CVE-2007-6712

Publication date 12 April 2008

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Description

Integer overflow in the hrtimer_forward function (hrtimer.c) in Linux kernel 2.6.21-rc4, when running on 64-bit systems, allows local users to cause a denial of service (infinite loop) via a timer with a large expiry value, which causes the timer to always be expired.

From the Ubuntu Security Team

Johannes Bauer discovered that the 64bit kernel did not correctly handle hrtimer updates. A local attacker could request a large expiration value and cause the system to hang, leading to a denial of service.

Read the notes from the security team

Status

Package Ubuntu Release Status
linux 8.04 LTS hardy
Not affected
7.10 gutsy Not in release
7.04 feisty Not in release
6.10 edgy Not in release
6.06 LTS dapper Not in release
linux-source-2.6.15 8.04 LTS hardy Not in release
7.10 gutsy Not in release
7.04 feisty Not in release
6.10 edgy Not in release
6.06 LTS dapper
Not affected
linux-source-2.6.17 8.04 LTS hardy Not in release
7.10 gutsy Not in release
7.04 feisty Not in release
6.10 edgy Ignored end of life
6.06 LTS dapper Not in release
linux-source-2.6.20 8.04 LTS hardy Not in release
7.10 gutsy Not in release
7.04 feisty
Fixed 2.6.20-17.37
6.10 edgy Not in release
6.06 LTS dapper Not in release
linux-source-2.6.22 8.04 LTS hardy Not in release
7.10 gutsy
Fixed 2.6.22-15.56
7.04 feisty Not in release
6.10 edgy Not in release
6.06 LTS dapper Not in release

Notes

kees

fixed upstream in two ways (see patch list)

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
linux

References

Related Ubuntu Security Notices (USN)

    • USN-625-1
    • Linux kernel vulnerabilities
    • 15 July 2008

Other references